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Finding the Fourth Proportional to 275,492.84, 380,185.76 and 154,642.87

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Solution

The fourth proportional to 275,492.84, 380,185.76 and 154,642.87 is: 213,410.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,492.84 : 380,185.76 = 154,642.87 : x
  2. Step 2: Convert to fraction form
    275,492.84/380,185.76 = 154,642.87/x
  3. Step 3: Cross multiply
    275,492.84x = 380,185.76 × 154,642.87
  4. Step 4: Simplify right side
    275,492.84x = 58,793,016,495.67
  5. Step 5: Solve for x
    x = 58,793,016,495.67/275,492.84
  6. Step 6: Final answer
    x = 213,410.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.